Claude Platform Docs

Get File Metadata

$ ant files retrieve-metadata
GET/v1/files/{file_id}

Get File Metadata

Parameters
--file-id: string

ID of the File.

--workspace-id: optional string

Optional header to select the Workspace for this request. The value is a Workspace ID (for example, wrkspc_011CZkZaBF1tNoB5wlCeusgy).

Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace.

Returns
file_metadata: object{ type: "file", id, created_at, 5 more }
type: "file"

Object type.

For files, this is always "file".

id: string

Unique object identifier.

The format and length of IDs may change over time.

created_at: string

RFC 3339 datetime string representing when the file was created.

formatdate-time
filename: string

Original filename of the uploaded file.

maxLength500
minLength1
mime_type: string

MIME type of the file.

maxLength255
minLength1
size_bytes: number

Size of the file in bytes.

minimum0
downloadable: optional boolean

Whether the file can be downloaded.

expires_at: optional string

RFC 3339 datetime string representing when the file will expire and become unavailable for download. Null if the file does not expire. For files uploaded with expires_in_seconds, this is the upload time plus that value.

formatdate-time
Get File Metadata
ant files retrieve-metadata \
  --api-key my-anthropic-api-key \
  --file-id file_id
Returns Examples
Response 200
{
  "id": "file_011CNha8iCJcU1wXNR6q4V8w",
  "created_at": "2025-04-15T18:37:24.100435Z",
  "filename": "document.pdf",
  "mime_type": "application/pdf",
  "size_bytes": 102400,
  "type": "file",
  "downloadable": false,
  "expires_at": "2025-05-15T18:37:24.100435Z"
}